CN106816677B - A kind of coupler based on substrate integration wave-guide - Google Patents
A kind of coupler based on substrate integration wave-guide Download PDFInfo
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- CN106816677B CN106816677B CN201611081933.3A CN201611081933A CN106816677B CN 106816677 B CN106816677 B CN 106816677B CN 201611081933 A CN201611081933 A CN 201611081933A CN 106816677 B CN106816677 B CN 106816677B
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- hole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
Abstract
This application provides a kind of coupler based on substrate integration wave-guide and including the antenna of the coupler.Coupler based on substrate integration wave-guide includes: the substrate integration wave-guide for being provided with continuous equally spaced first kind plated-through hole and at least two second metalloid through-holes.First kind plated-through hole is for constituting microwave from the transmission path between the output port that the input port of coupler is transferred to the coupler.Second metalloid through-hole is arranged in transmission path, and in the transmission direction of microwave after the diversion channel of coupler.And the second metalloid through-hole is less than or equal to the wavelength of microwave at a distance from the diversion channel.The most short spacing of the second adjacent metalloid through-hole is greater than the most short spacing of adjacent first kind plated-through hole.Second metalloid through-hole enables to most of energy of the microwave of feed-in input port to feed out from the output port in transmission direction, to realize the weak coupling of coupler in the transmit direction.
Description
Technical field
This application involves the communications field more particularly to a kind of couplers based on substrate integration wave-guide.
Background technique
In microwave system, often needs microwave power all the way being divided into several roads in proportion, i.e., microwave is subjected to power distribution.
Coupler is most common power-splitting device, is played an important role in a communications system.And the coupler of the ultralow degree of coupling is often
For correcting, detection circuit, be important elemental device.
Substrate integration wave-guide (Substrate Integrated Waveguide, SIW) is between micro-strip and media filler
A kind of transmission line between waveguide.SIW takes into account the advantages of conventional waveguide and microstrip transmission line, it can be achieved that high performance microwave millimeter wave
Planar circuit.The structure of SIW is as shown in Figure 1, wherein will with (microwave) transmission direction perpendicular two it is longer in while
It is defined as broadside, shorter side is defined as narrow side.It (is determined by broadside and along the side of transmission direction in the upper and lower surface of dielectric substrate
Surface) be covered with metal layer, also, be provided with the period through upper surface metal layer, dielectric substrate and lower surface metal layer
Property plated-through hole.The effect of periodical plated-through hole is to shield leaking for electromagnetic field, to form the transmission path of microwave.
Coupler based on SIW is currently used coupler.But the existing coupler based on SIW can not achieve
(standard of weak coupling is the power ratio of the power and input fed out no more than 1:10), i.e., as schemed for weak coupling in transmission direction
Shown in 1, output port in the transmit direction, can only receiving powerful microwave, (power of the microwave of output is with input terminal
The power ratio of the microwave of mouthful feed-in is greater than 1:10), and low power microwave cannot be received (power of the microwave of output is with defeated
The power ratio of the microwave of inbound port feed-in is not more than 1:10).
Summary of the invention
This application provides a kind of couplers based on substrate integration wave-guide, it is therefore intended that solves existing based on SIW's
Coupler can not achieve the problem of weak coupling in transmission direction.
To achieve the goals above, this application provides following technical schemes:
The first aspect of the application provides a kind of coupler based on substrate integration wave-guide, comprising: is provided with the first kind
The substrate integration wave-guide of plated-through hole and at least two second metalloid through-holes.The first kind plated-through hole is continuous
Equally spaced plated-through hole.The first kind plated-through hole is transmitted for constituting microwave from the input port of the coupler
Transmission path between the output port of the coupler.The second metalloid through-hole is arranged in the transmission path
It is interior.The second metalloid through-hole is located at after the diversion channel of the coupler in the transmission direction of the microwave, and
The second metalloid through-hole is less than or equal to the wavelength of the microwave at a distance from the diversion channel, wherein the shunting
Slot is used to the microwave being diverted to a plurality of transmission path from a transmission paths.Adjacent the second metalloid through-hole
Most short spacing is greater than the most short spacing of the adjacent first kind plated-through hole, centered on the most short spacing between point away from
From and diameter difference.Second metalloid through-hole enables to most of energy of the microwave of feed-in input port from transmission direction
On output port feed out, to realize the weak coupling of coupler in the transmit direction.
The second aspect of the application provides a kind of antenna, including the above-mentioned coupler based on substrate integration wave-guide.
In one implementation, coupler further include: along the microwave transmission direction, the coupler is set
Third metalloid through-hole before diversion channel.The effect that third metalloid through-hole is arranged before diversion channel is to prevent micro-
Wave returns to input port.
In one implementation, the quantity of the third metalloid through-hole is 1.
In one implementation, the second metalloid through-hole is more intensive, from the coupler along the microwave
Transmission direction the energy that feeds out of port it is smaller.Therefore it can be adjusted micro- by the density of the second metalloid through-hole of adjusting
The size for the energy that the port of the transmission direction of wave is fed out.
In one implementation, the diversion channel includes: that the substrate integration wave-guide is arranged in by way of fluting
Metal layer the coupler output port.
In one implementation, the diversion channel includes: by the first kind plated-through hole and the 4th metalloid
The gap that through-hole is constituted, the most short spacing of the first kind plated-through hole and the 4th metalloid through-hole are described greater than adjacent
The most short spacing of first kind plated-through hole.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of SIW；
Fig. 2 is the application scenarios schematic diagram of the coupler based on SIW disclosed in the embodiment of the present application；
Fig. 3 is a kind of structural schematic diagram of the coupler based on SIW disclosed in the embodiment of the present application；
Fig. 4 is the structural schematic diagram of another coupler based on SIW disclosed in the embodiment of the present application；
Fig. 5 is the structural schematic diagram of another coupler based on SIW disclosed in the embodiment of the present application；
Fig. 6 is the structural schematic diagram of another coupler based on SIW disclosed in the embodiment of the present application.
Specific embodiment
Fig. 2 is the framework of microwave telecommunication system, including outdoor macro station, outdoor small base station and indoor distributed system.It is outdoor macro
It stands and outdoor small base station has antenna.
The antenna in outdoor macro station and outdoor small base station can be set in the coupler based on SIW that the embodiment of the present application proposes
In.
Fig. 3 is a kind of sectional drawing along transmission direction for coupler based on SIW that the embodiment of the present application proposes, wherein wrapping
It includes: SIW and the first kind plated-through hole being arranged on SIW and the second metalloid through-hole.For the ease of statement, below will
Second metalloid through-hole is known as short circuit nail.
Wherein, the input port of coupler is arranged in one end and the plane perpendicular with transmission direction of SIW, coupler
The first output port the layer on surface of metal of SIW is set by way of fluting, the second output terminal mouth setting of coupler exists
On the other end of SIW and the plane perpendicular with transmission direction.
First kind plated-through hole is the periodic plated-through hole being arranged on SIW, same as shown in Figure 1, these weeks
The effect of the plated-through hole of phase property is to shield leaking for electromagnetic field, to form the biography slave input port to output port of microwave
Defeated path.
Therefore, in coupler shown in Fig. 3, microwave metallizes after input port feed-in coupler along the first kind
The transmission path that through-hole is constituted, a part are fed out from the first output port, and another part is fed out from second output terminal mouth.It can
See, microwave is classified as two by the first output port, i.e., so that the transmission path of microwave splits into two from one.Therefore,
One output port is the diversion channel of coupler.
Short circuit nail is, through the plated-through hole of SIW (including two metal layers and dielectric substrate), it acts as make
Most of energy of microwave is fed out from the first output port, and fraction energy is fed out from second output terminal mouth, to realize transmission side
Upward weak coupling.
Fig. 4 is the top view of the coupler shown in Fig. 3 based on SIW, and compared with first kind plated-through hole, short circuit nail is special
Some setting rules are as follows:
1, short circuit nail is located within the transmission path that first kind plated-through hole is constituted, as shown in figure 4, being distributed in SIW two
The opposite region of the first kind plated-through hole of side is the transmission path of microwave, and short circuit nail will be located within this region, without
In the region that the edge of first kind plated-through hole and side SIW that side can be located at is constituted.
2, in the transmit direction, short circuit nail is arranged after the first output port, and small at a distance from the first output port
In or equal to 1 wavelength, which is the wavelength of the microwave transmitted in coupler.
3, the quantity at least two of short circuit nail, and (most short spacing is the most short spacing between two adjacent short circuit nails
The distance between central point subtracts diameter) greater than most short of adjacent two first kind plated-through hole along transmission direction
Away from.Assume that the spacing between the central point of adjacent two short circuits nail is A, the diameter of short circuit nail is D, then A-D > p-d is (such as
Shown in Fig. 1, d is the diameter of first kind plated-through hole, and p is adjacent two first kind plated-through hole along transmission method
Central point distance).
Short circuit nail based on above-mentioned rule setting, enables to most of energy of the microwave of feed-in input port from first
Output port is fed out, and fraction energy is fed out from second output terminal mouth, to realize the weak coupling of coupler in the transmit direction
It closes.
More intensive according to the short circuit nail of above-mentioned rule setting, i.e., the most short spacing between short circuit nail is smaller, then defeated from second
The power for the microwave that exit port is fed out is smaller, conversely, the short circuit nail according to mentioned above principle setting is more sparse, i.e., between short circuit nail
Most short spacing is bigger, and the power of the microwave fed out from second output terminal mouth is bigger.
It should be noted that being by K (being drawn in figure) based on the coupler of SIW shown in Fig. 3 and Fig. 4
Input port feed, the size of cracking by adjusting the first output port adjust the S parameter of port sum, and concrete mode may refer to
The prior art, which is not described herein again.
Fig. 5 is the top view of another coupler based on SIW provided by the embodiments of the present application, and difference exists compared with Fig. 4
In: along transmission direction, short circuit nail is provided with before the first output port, in order to follow closely area with Fig. 3 and short circuit shown in Fig. 4
Point, by Fig. 3 and it is shown in Fig. 4 short circuit nail be known as the first kind short circuit nail (i.e. the second metalloid through-hole), by it is shown in fig. 5
The short circuit nail being arranged before first output port is known as the second class short circuit nail (i.e. third metalloid through-hole).
The effect of second class short circuit nail is that microwave is prevented to return to input port, and setting follows above-mentioned regular 1, and quantity can
Think one or more.
Fig. 3 to Fig. 5 is illustrated by taking the SIW of two output of an input as an example, in addition to the SIW of two output of an input, this Shen
Please be described the SIW for realizing that the technology of the weak coupling in transmission direction can be applied in other output types is followed closely by short circuit
On, constitute the coupler different from Fig. 3~Fig. 5.
Fig. 6 be another coupler based on SIW provided by the embodiments of the present application top view, wherein one end of SIW with
Input port and the first output port are provided in the perpendicular plane of transmission direction, the other end of SIW mutually hangs down with transmission direction
Second output terminal mouth and third output port are provided in straight plane.
Unlike Fig. 3 to Fig. 5, it is (empty that the first kind plated-through hole on the SIW in Fig. 6 constitutes three transmission paths
Shown in line), the starting point of the first transmission paths is input port, and terminal is second output terminal mouth.Second transmission paths rise
Point is input port, and terminal is the first output port.The starting point of third transmission paths is input port, and terminal is third output
Port.Wherein, first kind plated-through hole plated-through hole #1 (being properly termed as the 4th metalloid through-hole) adjacent thereto
Most short spacing be greater than adjacent first kind plated-through hole most short spacing, therefore, plated-through hole #1 it is adjacent thereto first
Metalloid through-hole constitutes diversion channel, it acts as feeding out the microwave from input port feed-in from the first transmission paths,
To form second and third transmission paths.
In the first transmission paths, it is provided with first kind short circuit nail and the second class short circuit nail, first kind short circuit nail setting
After transmission direction, plated-through hole #1, and it is less than or equal to 1 wavelength, the wavelength at a distance from plated-through hole #1
Wavelength for the microwave transmitted in coupler.The setting of second class short circuit nail is same as shown in Figure 5, and which is not described herein again.
Due to the setting of first kind short circuit nail, the coupler based on SIW shown in Fig. 6 can be obtained in transmission direction
Weak coupling signal.
Fig. 3 can be set on antenna shown in Fig. 2 to the coupler shown in fig. 6 based on SIW, realize in transmission direction
Weak coupling.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.
Claims (7)
1. a kind of coupler based on substrate integration wave-guide characterized by comprising
It is provided with the substrate integration wave-guide of first kind plated-through hole and at least two second metalloid through-holes；
The first kind plated-through hole is continuous equally spaced plated-through hole；The first kind plated-through hole is for constituting
Microwave is from the transmission path between the output port that the input port of the coupler is transferred to the coupler；
The second metalloid through-hole is arranged in the transmission path；The second metalloid through-hole is in the microwave
In transmission direction after the diversion channel of the coupler, and the second metalloid through-hole and the diversion channel away from
From the wavelength for being less than or equal to the microwave, wherein the diversion channel is for the microwave to be diverted to from a transmission paths
A plurality of transmission path；
The most short spacing of adjacent the second metalloid through-hole is greater than the most short of the adjacent first kind plated-through hole
Spacing, the distance between puts centered on the most short spacing and the difference of diameter.
2. coupler according to claim 1, which is characterized in that further include:
Transmission direction, the third metalloid through-hole that is arranged in front of the diversion channel of the coupler along the microwave.
3. coupler according to claim 2, which is characterized in that the quantity of the third metalloid through-hole is 1.
4. coupler according to claim 1 or 2, which is characterized in that the second metalloid through-hole is more intensive, from institute
It is smaller to state the energy that the port of the transmission direction along the microwave of coupler is fed out.
5. coupler according to claim 1 or 2, which is characterized in that the diversion channel includes:
The output port of the coupler of the metal layer of the substrate integration wave-guide is set by way of fluting.
6. coupler according to claim 1 or 2, which is characterized in that the diversion channel includes:
The gap being made of the first kind plated-through hole and the 4th metalloid through-hole, the first kind plated-through hole with
The most short spacing of 4th metalloid through-hole is greater than the most short spacing of the adjacent first kind plated-through hole.
7. a kind of antenna, which is characterized in that including coupler as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611081933.3A CN106816677B (en) | 2016-11-30 | 2016-11-30 | A kind of coupler based on substrate integration wave-guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611081933.3A CN106816677B (en) | 2016-11-30 | 2016-11-30 | A kind of coupler based on substrate integration wave-guide |
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| Publication Number | Publication Date |
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| CN106816677A CN106816677A (en) | 2017-06-09 |
| CN106816677B true CN106816677B (en) | 2019-06-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066367A (en) * | 2012-09-12 | 2013-04-24 | 电子科技大学 | Integration waveguide directional coupler |
| CN203826521U (en) * | 2014-04-18 | 2014-09-10 | 华南理工大学 | Substrate integrated waveguide filter realizing cross coupling by utilizing microstrip lines |
| CN104393388A (en) * | 2014-12-09 | 2015-03-04 | 电子科技大学 | Terahertz substrate integrated waveguide multi-channel power divider |
-
2016
- 2016-11-30 CN CN201611081933.3A patent/CN106816677B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066367A (en) * | 2012-09-12 | 2013-04-24 | 电子科技大学 | Integration waveguide directional coupler |
| CN203826521U (en) * | 2014-04-18 | 2014-09-10 | 华南理工大学 | Substrate integrated waveguide filter realizing cross coupling by utilizing microstrip lines |
| CN104393388A (en) * | 2014-12-09 | 2015-03-04 | 电子科技大学 | Terahertz substrate integrated waveguide multi-channel power divider |
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| CN106816677A (en) | 2017-06-09 |
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